Proxim 7921 Network Card User Manual


 
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In order to establish communication, all Stations and the Master
must be configured with the same Domain number. Radios on
different Domains cannot communicate with each other. The
Domain is a software filter which does not affect the actual radio
frequency or the frequency hopping sequence.
You may want to set everyone on your network to the same
Domain. For larger wireless networks, use the Domain to
establish roaming subnetworks throughout your building. For
example, the Engineering Department may use Domain 2, and
the Sales Department may use Domain 5. Then engineers can
only roam within the geographical area mapped out by
RangeLAN2 Access Points with a Domain setting of 2.
The Domain is a number between 0 and 15. Choose “U” for Use
Switch in order to use the number specified by the Domain
rotary switch. The default setting is the rotary Domain switch
which shipped from the factory set to Domain 0.
Note that while the rotary Domain switch allows the user to set
the Ethernet Adapter to operate on a Domain number between 0
and 9, the software configuration menu allows the user to set the
Domain to a number between 0 and 15. If you want to use a
Domain number between 10 and 15, you must configure this
parameter within the software configuration menu.
Each Master can select one of 15 Channels to establish commu-
nication with its Stations. Each Channel number sets a unique
frequency hopping sequence allowing for multiple subnetworks
with higher data rate transmission capability in the same air
space. You may think of the Channel as a pipe. In order to
communicate, radios must be on the same Channel and there
must be one (and only one) Master that provides the timing for
that Channel.